Non-skid chain



P. T. HAMM.

NON-SKID CHAIN.

APPLICATION FILED JAN. 20.1919.

1 325,322 Patented Dec. 16, 1919.

lmwntoz UNITED STATES P T NT oEEIoE.

PHILLIP T.

HAMM, OF DETROIT, MICHIGAN, ASSIGNOR OF ONE-THIRD T FRANK C.

HOSSIE AND HENRY WILD, BOTH 015 DETROIT, MICHIGAN.

NON-SKID 01mm.

Specification of Letters Patent.

Patented Dec. 16, 1919.

Application filed January 20, 1919. Serial E6. 271,983.

a To all whom it may concern: I

Be it known that I, PHILLIP T. HAMM, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Non-Skid Chains, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanymg drawings, which form a part of this specification.

My invention relates to non-skid chains although it is applicable ,to any form of '15 chain in which the construction may be desired and it consists in the particular construction thereof as hereinafter described.

In the drawings: Figure 1 shows the assembled chain attached for non-skid purposes.

Fig. 2'is an enlargement of a portion of said chain showing the tread side.

Fig. 3 is a side elevation of a portion of said chain showing the mannerin which it is assembled. I

Fig. 4 shows one of the blanks before it is formed into a link.

Fig. 5 shows one of the links. Fig. 6 is a longitudinal section on the line X-X of Fig. 5.

Fig. 7 is a cross section on the line YY Fig. 5.

Fig.8 is a plan view of the blank from which is formed the double ended link. Similar letters refer to similar parts.

To construct this chain I form of stifi sheet metal a blank A'stamped out of the form shown in Fig. 1. This blank has T- shaped end pieces B, B, two enlarged sec- 40 tions 0, C, a portion punched out at D with adjacent notches therein at E E. These blanks are bent in the center so that the two halves return upon themselves and form the block or link shown in Fig. 5 and the sides at ee are bent downward asshown in Fig. 7 so" that when the two halves are brought together in the bending operation the two halves shut together as shown in crosssection Fig/7. This makes a link with an opening at the bending point marked F. with a T-shape at the opposite end. In forming the chain the T-shaped end of one link enes the looped portion of the adjacent li as shown in Fig. 2. I may in the center V of this cross chain, if itis used for that purpose, form a link of a blank shown in Fig. 8

which has two nuts therein D D and which is bent uponitself the two straight edges meeting in the center at B as shown in Fig. 2. The adjacent links then, as hereinafter described, are reversed and the T-shaped ends B are clamped in the two loops formed by the bending upon itself of the blank Fig. 8. This, however, is not essential and is only advantageous when hooks are made to engage the chain for the purpose of connecting it to side chains. It is convenient to'reverse the position of the links as shown in Fig. 1 so as to engage the hooks G G which are adapted to engage the side chains in the usual manner. Itis obvious however that a continuous chain could be made of the blanks folded upon each other as hereinbe fore described. 1 When these chains are used for safety tire chains of the form shown in Fig. 1, the tire side of the chainis shown in that figure and is smooth. The tread side of the chain adapted to impinge upon the road .is shown in Fig. 2 and it contains small projections H H which are preferably formed in the process that are used to stamp out the blanks, while these are not essential to my chain they are preferable as they thereby aid in the slipping'of the chain upon the roadway. 85.

It is not necessary to describe'any mode of operation. I

What I desire to claim is:

1. In a non-skid chain, a center link, adj acent side links, each of said side links made from a sheet metal blank and formed with T-shaped end extensions, an elongated central opening. flanked by notches with adjay cent enlarged end portions, said blank being bent upon itself bringing the T-shaped end extensions together, edges of said enlarged opposed end portions being bent inward bringing the bent-in edges together to form a substantially rigid side wall for said link, said links bein connected together to form a chain, the -shaped end portions of one link carried by the looped portions of the adjacent link.

2. In a non-skid chain composed of links formed from sheet metal blanks, a central link formed from a blank having enlarged end portions, an enlarged central portion, intervening said central and end portions an elongated opening with adjacent side notches, said blank being bent upon itself at 110 the center of said openings forming looped portions at each endthereof, edges of enlarged center and end portions being bent inward to form substantially rigid side walls for said links, adjacent side links connected thereto to form a chain.

3. In a non-skid chain, a center link formed from a sheet metal blank having enlarged end and center portions, intervening cut away portions with adjacent elongated central openings therein, said blank being bent upon itself at the middle point of said openings forming a link looped at each end, edges of said enlarged end and center portions being bent inward to meet each other forming substantially rigid sidewalls for said link, adjacent side links formed from sheet metal blanks, each of said sheet metal blanks having a l'-shaped extenieaaaea v sion at each end, enlarged end portions, a cutaway central portion and an adjacent elongated opening therein, said blank being bent upon itself at the center of said opening bringing said 'T-shaped end extensions together to form a T and forming a loop at the opposite narrow end, enlarged end portions having their ed es turned inward to meet each other formin substantially rigid side walls for said lin said links being connected together to form a chain, a T-shaped extension of one link being carried by the looped end portion of the adjacent link, means for connecting the ends of said chain to circumferential side chains of a wheel.

In testimony whereof, I sign this specification.

rnrnnrr r. n. 

